# Question: A professor recorded three statistics exam scores and other variables for 20 students in her...

###### Question:

Question:

A professor recorded three statistics exam scores and other variables for 20 students in her statistics course.  There are seven variables in this data set: (1) ID number, (2) Sex, (3) Study Place, and (4) Hours of Work, (5) Exam 1 score, (6) Exam 2 score, and (7) Exam 3 score.

·      Sex (1 = Males, 2 = Females)

·      Study_Place ("Where do you study the most frequently for this class?"

1 = My room, 2 = Library, 3 = Coffee shops, 4 = others)

·      Work_Hour ("On average, how many hours do you spend for job-related tasks?")

Problem 1 :

Calculate the z score of the average exam score for each case.

a.    Show me the scores on all9variables (the original 7 variables, the mean exam score, and its z score) for the first 5cases.

b.   What is the z score of mean exam for ID 1?  Interpret his z score?

c.    Get the mean and SD of the z scores.  Review the output; can you locate the mean and SD of the z score distribution? What are the values?

Problem #2

a.     Calculate the mean and standard deviation (SD) of the mean exam score separatelyby study place.

b.     Construct a bar-graph for study place.  The X-axis represents Study Place and the Y-axis represents MEAN exam score.

c.     Review the output from 4-a and 4-b.  What conclusion can you draw from them? (for example, "Would the location of study be related to average exam score?")

#### Similar Solved Questions

##### 9.Given y = sin (-1) an equivalent statement is: UDENOHRALI 1910 a)sin (-1) = y b)sin...
9.Given y = sin (-1) an equivalent statement is: UDENOHRALI 1910 a)sin (-1) = y b)sin y = -1 c)sin = 1 y d)y = undefined 10.Simplify sin (cos-1 x) a) b)Vit C vitae div1 x2 11. Evaluate tan-14- stoomys by on 946 91813...
##### There are 4 black marbles and 2 white marbles in a bag
There are 4 black marbles and 2 white marbles in a bag. What is the probability of choosing a black marble,not replacing it, then choosing a white marble....
##### Problem 36 The column is made of material that has an elastic modulus of 3500 ksi...
Problem 36 The column is made of material that has an elastic modulus of 3500 ksi and an ultimate strength of 4 ksi. What is the maximum axial compressive load the column can resist. a) 4.97 kips b) 15.62 kips c) 17.85 kips d) 200.00 kips e) 7496.40 kips 10 in 20 A...
##### Using the Critical Thinking Process, identify 5 disk scheduling options, and 5 disk scheduling criteria. Weigh...
Using the Critical Thinking Process, identify 5 disk scheduling options, and 5 disk scheduling criteria. Weigh the options against the criteria and select the best disk scheduling option for: Identify and select a process-to-process communication technique that best both upward and downward scalabil...
##### Exercise 21.5 propove a mechanim ot tert-burgt pentanoate from pentanoic aud 9 any other necesvary reagentu....
exercise 21.5 propove a mechanim ot tert-burgt pentanoate from pentanoic aud 9 any other necesvary reagentu. Rember 30 dicono cannot be uved in the acid catalyst enteriticanon Procaure....
##### Explain why a buccal swab procedure should not cause bleeding. 9. The tight junctions between the...
Explain why a buccal swab procedure should not cause bleeding. 9. The tight junctions between the epithelial cells prevent blood from leaking out into the oral cavity. The cells removed are dead and therefore cannot bleed There are no blood vessels in the buccal region that can be broken Epithelium ...
##### True or False: A boy pushed a box with a weight of 300N up a ramp....
True or False: A boy pushed a box with a weight of 300N up a ramp. He said that, because the ramp was 1.0m high and 3.0m long, he must have been pushing with force of exactly 100N. If possible, can you please explain why. Thanks!...
##### Check my workCheck My Work button is now enabled3 Item 6 Item 6 10 points Franklin...
Check my workCheck My Work button is now enabled3 Item 6 Item 6 10 points Franklin Corporation makes and sells state-of-the-art electronics products. One of its segments produces The Math Machine, an inexpensive calculator. The company’s chief accountant recently prepared the following income ...
##### 4. A cube slides down a frictionless ramp as shown, and collides with a second cube...
4. A cube slides down a frictionless ramp as shown, and collides with a second cube in a fully inelastic collision. The larger cube has mass M, which is three times the mass of the smaller cube m. The ramp us 35 cm high and the table is 95 cm off the floor. If the newly combined object leaves the in...
##### 1. There are two potential consumers for a public good. Consumer 1 has inverse demand P...
1. There are two potential consumers for a public good. Consumer 1 has inverse demand P 1 = 30 − Q, Consumer 2 has inverse demand P 2 = 60 − 3 Q, where Q is the level of provision of the public good. The marginal cost of providing the public good is 30. What is the optimal level of provi...